qtranslate slug and nextgen slideshow not working

When qtranslate slug is active, the “show as slideshow” option from a nextgen gallery doesn’t work. It just reloads the same page and strips the last part of the URL (“gallery/slideshow”).

Is anyone experiencing the same behaviour and/or can someone point me in the right direction for a solution please? Thanks in advance.

https://www.ads-software.com/extend/plugins/qtranslate-slug/